Reversible Data Hiding Based on Multiple Two-Dimensional Histograms Modification

2019 ◽  
Vol 26 (6) ◽  
pp. 843-847 ◽  
Author(s):  
Jianqiang Qin ◽  
Fangjun Huang
Keyword(s):  
Data Hiding ◽  
Reversible Data Hiding ◽  
Two Dimensional

scholarly journals A novel two-dimensional reversible data hiding method with high embedding capacity in H.264/advanced video coding

2020 ◽  
Vol 16 (3) ◽  
pp. 155014772091100
Author(s):  
Yi Chen ◽  
Hongxia Wang ◽  
Xiaoxu Tang ◽  
Yong Liu ◽  
Hanzhou Wu ◽  
...  
Keyword(s):  
Video Coding ◽  
Video Compression ◽  
Data Hiding ◽  
Reversible Data Hiding ◽  
Error Concealment ◽  
Similarity Index ◽  
Two Dimensional ◽  
Embedding Capacity ◽  
High Embedding Capacity ◽  
Advanced Video Coding

Developing the technology of reversible data hiding based on video compression standard, such as H.264/advanced video coding, has attracted increasing attention from researchers. Because it can be applied in some applications, such as error concealment and privacy protection. This has motivated us to propose a novel two-dimensional reversible data hiding method with high embedding capacity in this article. In this method, all selected quantized discrete cosine transform coefficients are first paired two by two. And then, each zero coefficient-pair can embed 3 information bits and the coefficient-pairs only containing one zero coefficient can embed 1 information bit. In addition, only one coefficient of each one of the rest coefficient-pairs needs to be changed for reversibility. Therefore, the proposed two-dimensional reversible data hiding method can obtain high embedding capacity when compared with the related work. Moreover, the proposed method leads to less degradation in terms of peak-signal-to-noise ratio, structural similarity index, and less impact on bit-rate increase.

scholarly journals Reversible Data Hiding With Image Contrast Enhancement Based on Two-Dimensional Histogram Modification

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 83332-83342 ◽  
Author(s):  
Hao-Tian Wu ◽  
Weiqi Mai ◽  
Shuyi Meng ◽  
Yiu-Ming Cheung ◽  
Shaohua Tang
Keyword(s):  
Contrast Enhancement ◽  
Data Hiding ◽  
Reversible Data Hiding ◽  
Image Contrast ◽  
Two Dimensional ◽  
Histogram Modification ◽  
Image Contrast Enhancement

scholarly journals Reversible Data Hiding based on Two-dimensional Histogram Shifting

2021 ◽  
Author(s):  
Juan Zhao ◽  
Zhitang Li
Keyword(s):  
Discrete Cosine Transform ◽  
Data Hiding ◽  
Reversible Data Hiding ◽  
Two Dimensional ◽  
Histogram Shifting ◽  
Cosine Transform ◽  
Distortion Drift

This paper presents a two-dimensional histogram shifting technique for reversible data hiding algorithm. In order to avoid the distortion drift caused by hiding data into stereo H.264 video, we choose arbitrary embeddable blocks from 4×4 quantized discrete cosine transform luminance blocks which will not affect their adjacent blocks. Two coefficients in each embeddable block are chosen as a hiding coefficient pair. The selected coefficient pairs are classified into different sets on the basis of their values. Data could be hidden according to the set which the value of the coefficient pair belongs to. When the value of one coefficient may be changed by adding or subtracting 1, two data bits could be hidden by using the proposed method, whereas only one data bit could be embedded by employing the conventional histogram shifting. Experiments show that this two-dimensional histogram shifting method can be used to improve the hiding performance.

scholarly journals Separable Reversible Data Hiding in Encrypted Images Based on Two-Dimensional Histogram Modification

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Dawen Xu ◽  
Kai Chen ◽  
Rangding Wang ◽  
Shubing Su
Keyword(s):  
Data Hiding ◽  
Reversible Data Hiding ◽  
Data Extraction ◽  
Image Recovery ◽  
Two Dimensional ◽  
Secret Data ◽  
Histogram Modification ◽  
Encrypted Images ◽  
Difference Histogram ◽  
Image Difference

An efficient method of completely separable reversible data hiding in encrypted images is proposed. The cover image is first partitioned into nonoverlapping blocks and specific encryption is applied to obtain the encrypted image. Then, image difference in the encrypted domain can be calculated based on the homomorphic property of the cryptosystem. The data hider, who does not know the original image content, may reversibly embed secret data into image difference based on two-dimensional difference histogram modification. Data extraction is completely separable from image decryption; that is, data extraction can be done either in the encrypted domain or in the decrypted domain, so that it can be applied to different application scenarios. In addition, data extraction and image recovery are free of any error. Experimental results demonstrate the feasibility and efficiency of the proposed scheme.

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